HUA was moved by the horrible fate of the breeding dogs in puppy mills, and in response, is hosting a Mother's Day protest honoring the forgotten mothers of puppy mill dogs on Saturday, May 13 from noon to 3:00 p.m. at 4 Corners 66th & O Streets, Lincoln, Nebraska. (jasonheigl.foundation)
My simple answer to your question is keep looking for someone to responsibly adopt them, meaning the new owners will license and have them spayed as required by law, so as to break the cycle of legal non-compliance if that was the case with the mother of those puppies. (okcpetsmagazine.com)
A good breeder should show you the mother of the puppies as well as paperwork certification if he or she is claiming the dogs are purebred. (meisterhunde.com)